EP 0832176 B1 20010711 - AUTOMATIC DISHWASHING COMPOSITIONS COMPRISING COBALT CATALYSTS
Title (en)
AUTOMATIC DISHWASHING COMPOSITIONS COMPRISING COBALT CATALYSTS
Title (de)
MASCHINENGESCHIRRSPÜLMITTEL, DIE KOBALTKATALYSATOREN ENTHALTEN
Title (fr)
COMPOSITIONS DETERGENTES POUR LAVE-VAISSELLE AUTOMATIQUES, CONTENANT DES CATALYSEURS AU COBALT
Publication
Application
Priority
- US 9607129 W 19960517
- US 49146295 A 19950616
- US 50819395 A 19950727
Abstract (en)
[origin: US5705464A] Automatic dishwashing detergent compositions comprising certain cobalt catalysts are provided. More specifically, the invention relates to automatic dishwashing detergents which provide enhanced cleaning/bleaching benefits (especially tea stain removal) through the selection of cobalt bleach catalyst having the formula:[Co(NH3)n(M)m(B)b]Tywherein cobalt is in the +3 oxidation state; n is 4 or 5 (preferably 5); M is one or more ligands coordinated to the cobalt by one site; m is 0, 1 or 2 (preferably 1); B is a ligand coordinated to the cobalt by two sites; b is 0 or 1 (preferably 0), and when b=0, then m+n=6, and when b=l, then m=0 and n=4; and T is one or more appropriately selected counteranions present in a number y, where y is an integer to obtain a charge-balanced salt (preferably y is 1 to 3; most preferably 2 when T is a -1 charged anion); and wherein further said catalyst has a base hydrolysis rate constant of less than 0.23 M-1 s-1 (25 DEG C.). Preferred automatic dishwashing compositions comprise amylase and/or protease enzymes. Included are methods for washing tableware in domestic automatic dishwashing appliances using the cobalt catalysts.
IPC 1-7
IPC 8 full level
C11D 3/395 (2006.01); C11D 3/26 (2006.01); C11D 3/39 (2006.01)
CPC (source: EP US)
C11D 3/3932 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE
DOCDB simple family (publication)
US 5705464 A 19980106; AT E203051 T1 20010715; AU 5862396 A 19970115; BR 9609284 A 19990511; CA 2224558 A1 19970103; CA 2224558 C 20030715; CN 1192774 A 19980909; DE 69613842 D1 20010816; DE 69613842 T2 20020404; EP 0832176 A1 19980401; EP 0832176 B1 20010711; ES 2158320 T3 20010901; JP 4592832 B2 20101208; JP H11507690 A 19990706; MX 9710167 A 19980731; TR 199701633 T1 19980421; US 5962386 A 19991005; WO 9700312 A1 19970103
DOCDB simple family (application)
US 79589897 A 19970206; AT 96920265 T 19960517; AU 5862396 A 19960517; BR 9609284 A 19960517; CA 2224558 A 19960517; CN 96196085 A 19960517; DE 69613842 T 19960517; EP 96920265 A 19960517; ES 96920265 T 19960517; JP 50306297 A 19960517; MX 9710167 A 19971215; TR 9701633 T 19960517; US 9607129 W 19960517; US 96465497 A 19971105